INA303 - Texas Instruments

INA303 Current-Sense Amplifiers

The INA302 and INA303 (INA30x) devices feature a high common-mode, bidirectional, current-sensing amplifier and two high-speed comparators to detect out-of-range current conditions. The INA302 comparators are configured to detect and respond to overcurrent conditions. The INA303 comparators are configured to respond to both overcurrent and undercurrent condi.

Features

•1 Wide common-mode input range:
  –0.1 V to +36 V
• Dual comparator outputs:
  – INA302: Two independent overlimit alerts
  – INA303: Window comparator
  – Threshold levels set individually
  – Comparator 1 alert response: 1 µs
  – Comparator 2 adjustable delay: 2 µs to 10 s
  – Open-drain outputs with independent latch control modes
• High accuracy amplifier:
  – Offset voltage: 30 µV (max, A3 version)
  – Offset voltage drift: 0.5 µV/°C (max)
  – Gain error: 0.15% (max, A3 version)
  – Gain error drift: 10 ppm/°C
• Available amplifier gains:
  – INA302A1, INA303A1: 20 V/V
  – INA302A2, INA303A2: 50 V/V
  – INA302A3, I.